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Eyeglasses - MSN Encarta The lenses of eyeglasses are ground in the form of concave spherical lenses for nearsightedness (myopia), convex spherical lenses for farsightedness (hyperopia), cylindrical lenses for astigmatism, and prisms for defects of convergence. Eyeglasses were first used in Europe in Italy, and some portraits dating from the Middle Ages depict persons wearing eyeglasses. With the invention of the printing press in the 15th century, the demand for eyeglasses increased and by 1629 was large enough for a charter to be granted to a guild of spectacle makers in England. encarta.msn.com /encyclopedia_761573348/Eyeglasses.html   (776 words)

Eyeglasses, Magnetic Eyeglasses, Prescription Lenses, Rimless Eyeglasses, Flexible Titanium Eyeglasses Eyeglasses typically consist of a pair of glass or plastic lenses mounted in a frame that sits on the bridge of the nose and is held in place with arms that rest or are hooked behind the ears. Corrective eyeglasses with concave (inwardly curved) lenses compensate for the refraction error by moving the image of a distant object backward onto the retina Farsightedness (hyperopia) is a condition that allows far objects to be seen clearly but presents difficulty with near vision. Corrective eyeglasses with convex (outwardly curved) lenses compensate for the refraction errors by moving the image of a distant object forward onto the retina. www.eyeglassdirect.com   (566 words)

Encyclopedia - Prescription Eyewear Eyeglasses comprise a pair of glass or plastic lenses positioned in front of the eyes by a frame that sits on the bridge of the nose and is held in place with arms that rest on or are hooked behind the ears. Eyeglasses now are available in a large variety of designs, shapes, and materials that can be adjusted by coatings, tints, and other treatments. The focusing ability of an eyeglass lens is determined by the difference in curvature on its front and back surface, its thickness, and its index of refraction. www.visionrx.com /library/enc/enc_prescglasses.asp   (2399 words)

Aviator eyeglasses - Patent 4511226 The auxiliary eyeglasses are attached to the standard eyeglasses by a connecting mechanism of a sleeve circumferentially and rotatably surrounding a wire bar. The auxiliary eyeglasses are held in the "up" position by a detent on the center of the sleeve which frictionally snaps over a resilient crosswire on the auxiliary eyeglasses and then prevents the auxiliary eyeglasses from slipping back down over the conventional eyeglasses. Eyeglasses 10, having frames 14 and lenses 42, are shown attached to sleeve 26. www.freepatentsonline.com /4511226.html   (2026 words)

Ed Welch's Antique Vintage Eyeglasses and Spectacles, Winslow, ME 207-872-5849 Eyeglasses with cable temples that loop behind the ears were introduced by American Optical Company in 1885. This improvement in eyeglass frames was made possible by the introduction of Bessemer Steel (spring steel) in the late 1860's. Eyeglass and Spectacle Cases I have a large selection of cases that range in age from 1727 through 1960. www.eyeglasseswarehouse.com   (1319 words)

Glasses - Wikipedia, the free encyclopedia Glasses, spectacles, or eyeglasses are frames bearing lenses worn below the forehead and in front of the human eyes, normally for vision correction or eye protection or for protection from UV rays. Eye glasses or eyeglasses is a word used in North American English. Eyeglasses were a common part of the hipster persona, for example Dizzy Gillespie. en.wikipedia.org /wiki/Eyeglasses   (2704 words)

Discount Eyeglasses Designer Eyeglasses $34.50 Complete with Rx: Eyeglass Factory Outlet has a talented staff of "opticians and technicians" and have many years of experience. Barry Meyer, the CEO of the Eyeglass Factory Outlet and his wife Andrea the President, have over 20 years experience in the optical industry. Eyeglasses Facts and thoughts that may be of interest: Every several months 48 Hours, Consumer Reports and 20/20 expose the optical industry for consumer rip-offs. www.eyeglassfactoryoutlet.com /aboutus.php   (488 words)

[No title] In eyeglasses, the focal length must be adjusted so as to focus the image directly onto the retina of the eye, creating a clear image for the person looking through the lense. Eyeglasses, as mentioned in the introduction, are an important and present part in the lives of billions of Americans. As understanding in the field of optics as it relates to eyeglasses grows, the social development and progress is not limited simply to the creation of new and better eyeglasses. www.angelfire.com /scifi2/eyeglass   (1547 words)

Eyeglass prescription - Wikipedia, the free encyclopedia It specifies the parameters to which the eyeglasses are to be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. This may be done with eyeglasses or contact lenses, or by altering the shape of various eye structure via refractive surgery or special contact lenses. Eyeglasses sometimes have unwanted effects including magnification or minification, distortion, color fringes, altered depth perception, etc. Although many people think of lenses as magnifiers, the lenses within eyeglasses improve vision primarily by reducing blur. en.wikipedia.org /wiki/Eyeglass_prescription   (2084 words)

Eyeglasses Not only are there many different shapes and colors in eyeglass frames, but advances in technology have also brought us a variety of new materials, for both the frames and the lenses, which makes eyeglasses more durable, lightweight and user-friendly. Eyeglass frames are now created from high-tech materials such as titanium and "memory metal" for the ultimate in strength and style, while the lenses are now thinner and lighter than ever before, even in high prescriptions. When women shop for eyeglasses, their top concern is usually how the glasses look on them, followed by comfort and fits get a great look that's uniquely you. www.psm.edu /Outpatient_Clinic/eyeglasses.htm   (621 words)

Your Eyes and Eyeglasses These eyeglass lenses are impact-resistant and are a good choice for people who regularly participate in sporting activities, work in a job environment in which their eyeglasses may be easily scratched or broken, and for children who may easily drop and scratch their eyeglasses. These eyeglass lenses may not darken in a car because the windshield could block the ultraviolet rays from the sun. The eyeglass lens is split into two sections; the upper part is for distance vision and the lower part for near vision. www.webmd.com /content/article/63/71988.htm   (912 words)

Eyeglasses A corrective eyeglass lens is one that is used in place of, or in addition to, the lens of the eye in order to increase visual acuity. Eyeglasses are often chosen over contact lenses for a number of reasons. Eyeglass frames vary considerably according to shape, colors, and materials. www.innvista.com /HEALTH/ailments/eyeail/eyeglass.htm   (1700 words)

eyeglasses Whether you are disposing of a pair of eyeglasses because they are broken, out-of-style, or you need a different prescription, "recycling" your eyeglasses can make a difference in the life of someone in need of a pair of eyeglasses. The collected eyeglasses are recycled at one of nine Lions Eyeglass Recycling Centers throughout the world, where they are cleaned, repaired and classified by prescription. Eyeglasses are collected, recycled, and distributed free of charge to visually impaired people in over 25 countries. www.worldwise.com /recey.html   (384 words)

eyeglasses — Infoplease.com Incorrect eyeglasses may do harm, and lenses should be prescribed by an ophthalmologist or optometrist and fitted by a skilled optician. Eyeglasses to protect the eyes from glare or from foreign bodies are made of tinted or polarized glass and of wire mesh. The Eskimo make and use wooden eyeglasses that have only narrow slits for eyepieces to protect the eyes from glare reflected by ice and snow. www.infoplease.com /ce6/sci/A0818065.html   (350 words)

Eyeglasses - A Guide to Prescription Eyeglasses from All About Vision® Eyeglasses with unusual shapes and colors might be for you. Find out what eyeglasses are in style, plus how to get great-looking, comfortable frames that are unique to you. Specialty eyewear includes eyeglasses and sunglasses that are designed for a specific purpose, such as computer use, driving, work, hobbies, protecting your eyes and more. www.allaboutvision.com /eyeglasses   (825 words)

Eyeglasses Eyeglasses correct vision problems, such as nearsightedness, farsightedness, astigmatism, and presbyopia by focusing light more appropriately on the retina. In the past, eyeglass lenses were made exclusively of glass; today, however, most lenses are made of plastic. He or she can help you choose the lenses that are best for you based on your lifestyle and vision needs. clevelandclinic.org /health/health-info/docs/3000/3033.asp?index=8593   (649 words)

Optics 2 Eyeglasses appeared first in Florence about 1280 and their use spread rapidly. Kepler was among the few to accept the Copernican heliocentric astronomy and he discovered the laws of planetary motion which set the path for Newton’s theory of gravitation. He was one of the first to actually experiment with contact lenses on animals and then, finally, fit contact lenses to human eyes. www.ee.umd.edu /~taylor/optics2.htm   (763 words)

Eyeglasses Probably the oldest eyeglass frames known are recorded in a painting by di Modena in 1352. However, it was not until the latter part of the 19th century that temple pieces were used on eyeglass frames. About this time, a variety of materials such as gold, silver, horn, fishbone, wood, and steel were introduced in the manufacturing of eyeglass frames. www.tedmontgomery.com /the_eye/glasses.html   (984 words)

Where Can I Donate Eyeglasses? The Lions Eyeglasses Recycling Program was adopted as an official service activity of Lions Clubs International in October 1994. There are 13 official Lions Eyeglass Recycling Centers in the world (seven in the U.S., one each in Australia, Canada, France, Italy, Republic of South Africa, and Spain). When training is completed, the recycling centers continue to provide eyeglasses to the local Lions responsible for managing their respective programs. www.lionsclubs.org /EN/content/vision_eyeglass_centers.shtml   (332 words)

1.0 Eyeglasses Inventory Program This trip proved the value of measured eyeglasses to properly fit the need of the patients who visited the clinic. What we discovered from the February 2001 trip is that the procedure of using the Focometer to measure the eyeglasses was not only laborious but also was inaccurate. His knowledge in the selection of eyeglasses is a great part of the power of this program. www.eyeglasses-inventory.com   (1333 words)

Prescription Eyeglasses & Eyewear at EyeBuyDirect Comfort is essential in our eyeglasses and many of our models are fitted with high usage spring joints developed over a number of years to let our glasses fit your face with comfort. Many of our eyeglass designs are concentrated on clean simple shapes including soft Quadra for women and strong and more rectangular shapes for men but there is so much out there in our range of eyeglasses that at the moment it is impossible to define the ideal frame for today's trendy glasses wearer. Our eyeglasses are offered in the latest colors and color contrasts, the Amazon and Safari frame contrasts a classic exterior color with a vibrant interior tone this is a key theme this season presenting more glamorous and fashionable eyewear. www.eyebuydirect.com   (1014 words)

39 Dollar Glasses.com Discount Prices on High Quality Eyeglasses and Sunglasses Online. Polycarbonate is the required material for all children's eyeglasses because of its safety qualities - it's the material used to make bulletproof glass. For this reason, it's also the eye doctors' lens of choice for those with a blind eye or amblyopia (commonly called a "lazy eye"), where one eye's best-corrected vision is worse than the other eye. Prior to shipping, each pair of eyeglasses or prescription sunglasses are inspected by a certified technician to ensure the accuracy of the prescription and proper alignment of the frame. www.39dollarglasses.com   (593 words)

Eyeglasses, Presciption Eyeglasses, Prescription Lenses, Rimless Eyeglasses, Flexible Titanium Eyeglasses Reading-only eyeglasses: Some prescriptions are written separately for reading or in its entirety (as "NEAR", "N.V." or "N.V.O."). For reading-only prescriptions, enter the numbers on the lower half of the form and exclude the ADD powers (as in sample 3 above). Your prescription may be written out on a blank Rx pad, instead of a pre-made Rx pad for eyeglasses only. www.eyeglassdirect.com /about-rx.asp   (643 words)

eBay Guides - Vintage Eyeglasses Tips on purchasing vintage eyeglasses online from a family who has been in the eyeglass business for over 50 years. Our selection of vintage eyeglasses has been in our temperature controlled storage facility for the past 50 years, so we are able to guarantee the quality of the items we sell, regardless of when they were made. Measure your current eyeglasses and see how they compare to those you are looking at online. reviews.ebay.com /Vintage-Eyeglasses_W0QQugidZ10000000000061105   (424 words)

Donate Eyeglasse Lions, Leos, and other volunteers collect used eyeglasses for donation to Lions Eyeglass Recycling Centers that are located throughout the world. The used eyeglasses are cleaned and classified by prescription. The eyeglasses are then distributed to those in need by Lion volunteers and other organizations hosting optical missions in developing countries. www.lionsclubs.org /EN/content/vision_eyeglass_recycling.shtml   (143 words)

Eyewear Eyeglasses from theyedoctor.com prescription eyeglasses sunglasses contact lenses These are the same brand new comfortable eyeglasses found at your doctor's office, backed by manufacturers guarantee. If there is a specific frame that you are looking for and do not find on our site, feel free to use our no cost quote request option to obtain availability and pricing. We are excited to offer you unique one of a kind sport specific eyewear such as golf or tennis eyewear reliably made in non-prescription lenses or in your prescription. www.theyedoctor.com   (320 words)

Nationwide Vision - Eyeglasses One pair of eyeglasses with these lenses has the flexibility to be worn either inside or outside. These lenses are activated by ultra violet light, therefore these lenses may not be suitable sunglasses for driving. When bright light is reflected, polarized lenses combat this problem with maximum UV and incomparable glare reduction. www.nationwidevision.com /products-eyeglassesNEW.html   (383 words)

Prescription Billiard Eyeglasses Billiards / Pool / Snooker Rx Eyeglasses were developed to meet the demand, from billiard playing clients, for comfortable, practical and non-slip eyeglasses that would not hinder vision, while playing billiards, pool or snooker. Billiards / Pool / Snooker Rx Eyeglasses are designed to sit comfortably on the bridge of the nose, the rimless mounted Rx lenses rise high above the eyebrow, thus allowing a complete field of unobstructed vision along the cue and to the target. Billiards / Pool / Snooker Rx Eyeglasses are specially designed for billiard players and custom made by Gordon Harrison Opticians according to your prescription, and available only at our retail outlet or by online order from our website. www.billiard-eyeglasses.com   (502 words)

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